<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>websocket test</title>
</head>
<body>
    
</body>
<script>
    const ws = new WebSocket('ws://localhost:3000/chat');
    ws.onopen = function(e) {
        console.log('connected');
    };
    ws.onmessage = function(e) {
        console.log(e.data);
    };
    ws.onclose = function(e) {
        console.log('disconnected');
    };
</script>
</html>